{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-39809", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.137Z", "datePublished": "2025-09-16T13:00:11.977Z", "dateUpdated": "2026-08-05T12:05:20.529Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:05:20.529Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: intel-thc-hid: intel-quicki2c: Fix ACPI dsd ICRS/ISUB length\n\nThe QuickI2C ACPI _DSD methods return ICRS and ISUB data with a\ntrailing byte, making the actual length is one more byte than the\nstructs defined.\n\nIt caused stack-out-of-bounds and kernel crash:\n\nkernel: BUG: KASAN: stack-out-of-bounds in quicki2c_acpi_get_dsd_property.constprop.0+0x111/0x1b0 [intel_quicki2c]\nkernel: Write of size 12 at addr ffff888106d1f900 by task kworker/u33:2/75\nkernel:\nkernel: CPU: 3 UID: 0 PID: 75 Comm: kworker/u33:2 Not tainted 6.16.0+ #3 PREEMPT(voluntary)\nkernel: Workqueue: async async_run_entry_fn\nkernel: Call Trace:\nkernel: \nkernel: dump_stack_lvl+0x76/0xa0\nkernel: print_report+0xd1/0x660\nkernel: ? __pfx__raw_spin_lock_irqsave+0x10/0x10\nkernel: ? __kasan_slab_free+0x5d/0x80\nkernel: ? kasan_addr_to_slab+0xd/0xb0\nkernel: kasan_report+0xe1/0x120\nkernel: ? quicki2c_acpi_get_dsd_property.constprop.0+0x111/0x1b0 [intel_quicki2c]\nkernel: ? quicki2c_acpi_get_dsd_property.constprop.0+0x111/0x1b0 [intel_quicki2c]\nkernel: kasan_check_range+0x11c/0x200\nkernel: __asan_memcpy+0x3b/0x80\nkernel: quicki2c_acpi_get_dsd_property.constprop.0+0x111/0x1b0 [intel_quicki2c]\nkernel: ? __pfx_quicki2c_acpi_get_dsd_property.constprop.0+0x10/0x10 [intel_quicki2c]\nkernel: quicki2c_get_acpi_resources+0x237/0x730 [intel_quicki2c]\n[...]\nkernel: \nkernel:\nkernel: The buggy address belongs to stack of task kworker/u33:2/75\nkernel: and is located at offset 48 in frame:\nkernel: quicki2c_get_acpi_resources+0x0/0x730 [intel_quicki2c]\nkernel:\nkernel: This frame has 3 objects:\nkernel: [32, 36) 'hid_desc_addr'\nkernel: [48, 59) 'i2c_param'\nkernel: [80, 224) 'i2c_config'\n\nACPI DSD methods return:\n\n\\_SB.PC00.THC0.ICRS Buffer 000000003fdc947b 001 Len 0C = 0A 00 80 1A 06 00 00 00 00 00 00 00\n\\_SB.PC00.THC0.ISUB Buffer 00000000f2fcbdc4 001 Len 91 = 00 00 00 00 00 00 00 00 00 00 00 00\n\nAdding reserved padding to quicki2c_subip_acpi_parameter/config." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.4, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The vulnerable code is reached only through local PCI driver probe of the Intel THC QuickI2C controller, consuming ACPI `_DSD` data from the local platform firmware namespace; there is no network or adjacent-network path to it.\nAC:L - The overflow is fully deterministic — every probe on affected hardware copies a firmware-returned buffer that is one byte larger than the destination stack struct, with no race, no memory-layout dependency, and no conditional configuration required.\nPR:N - The vulnerable memcpy executes unconditionally during automatic async device probe at boot, before any user authenticates; no capability, credential, or privileged operation is checked anywhere on the path from PCI enumeration to the overflow.\nUI:N - Probe is triggered by PCI device enumeration on the async probe workqueue with no user action whatsoever — no file to open, no device to attach, no mount to perform.\nS:U - The corruption is confined to the kernel stack within the same security authority; no hypervisor, IOMMU, or sandbox boundary is crossed.\nC:H - An out-of-bounds write on the kernel stack adjacent to other frame locals, saved registers, and the return address is leveragable for control-flow manipulation and therefore arbitrary kernel memory disclosure, and the copy length is entirely unvalidated so the overwrite is not inherently bounded.\nI:H - This is a stack out-of-bounds write whose size comes unchecked from the ACPI buffer length, giving a write primitive past the destination object into the caller's frame — including canary and saved return address — which is the classic path to control-flow hijack.\nA:H - The bug is a confirmed KASAN stack-out-of-bounds that crashed the kernel on affected hardware, and stack corruption reliably produces a panic (stack-protector abort or corrupted return), rendering the machine unbootable at probe time." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/hid/intel-thc-hid/intel-quicki2c/quicki2c-dev.h" ], "versions": [ { "version": "5282e45ccbfa91524944a32d40386c54fdd4d145", "lessThan": "4adce86d4b13d15dec7810967839b931b1598700", "status": "affected", "versionType": "git" }, { "version": "5282e45ccbfa91524944a32d40386c54fdd4d145", "lessThan": "1db9df89a213318a48d958385dc1b17b379dc32b", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/hid/intel-thc-hid/intel-quicki2c/quicki2c-dev.h" ], "versions": [ { "version": "6.14", "status": "affected" }, { "version": "0", "lessThan": "6.14", "status": "unaffected", "versionType": "semver" }, { "version": "6.16.5", "lessThanOrEqual": "6.16.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.17", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.14", "versionEndExcluding": "6.16.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.14", "versionEndExcluding": "6.17" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/4adce86d4b13d15dec7810967839b931b1598700" }, { "url": "https://git.kernel.org/stable/c/1db9df89a213318a48d958385dc1b17b379dc32b" } ], "title": "HID: intel-thc-hid: intel-quicki2c: Fix ACPI dsd ICRS/ISUB length", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2025-39809", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2026-01-14T18:14:35.149925Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-787", "description": "CWE-787 Out-of-bounds Write" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-14T18:22:54.861Z" } } ] } }